Res92 11882 - Laserfiche WebLink

Browse Search

FINDINGS OF FACT/Page Two To service any equipment above the T-bar system, the drop-in panels must be removed (or set aside on top of the grid). This is made very difficult to do without damaging the panels. The 12" minimum clearance above the grid system would make the areas accessible without damage to the system. The additional weight of the wires on the grid could cause support failure (a noncalculated load) with any seismic action. Being in the midst of "high-tech" industries, there is an inordinate amount of cables installed for communication and computer systems. 5. SECTION 9.115 -Aluminum conductors. The geographic location of this area, surrounded by the ocean and bay waters produces an atmosphere of high saline (salt) content. Exposed aluminum wire readily corrodes with aluminum oxide which has insulative characteristics; all the more reason to follow the step-by-step instructions in preparing aluminum wire for termination. Aluminum wire must be handled very carefully when removing the insulation, cleaning with a wire brush, protecting with a corrosion inhibitor (anti-oxidant), and making connections with the use of torque charts, wrenches and/or screw drivers. If the above steps are not followed a "high-resistance" termination (connection) will occur. The aluminum wire will heat up at the terminal, electrical arcing will start destroying the wire, the terminal, and the equipment in use, with the possibility of personal injury. 6. SECTIONS 9.121 THROUGH 9.131 - Seismic design requirements for Younger Bay Mud. Redwood City contains an area underlain by younger bay mud. Special construction is required in this area in order to protect new construction from severe damage or failure in the event of an earthquake (Redwood City is located in an area recognized as the most severe seismic zone). Prior to the development of this area, Redwood City commissioned a seismic advisory board of renowned experts to develop design criteria for construction in this area. An initial report was issued in 1972, with the City Council thereafter adopting requirements for construction. Redwood City commissioned a member of this original board to review the updated 1988 and 1991 Uniform Building Code for correlation with the Redwood City Younger Bay Mud provisions. The proposed Redwood City Code is the result of recommendations from that study. 11882 JTL:mkc 7/24/92